/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hddz.comlib.ui.base.quicksearchbox;

import java.util.ArrayList;

import android.util.Log;

/**
 * A promoter that first promotes any shortcuts, and then delegates to another
 * promoter.
 * 
 */
public class ShortcutPromoter implements Promoter
{
	private static final String		TAG	= "QSB.ShortcutPromoter";
	private static final boolean	DBG	= false;
	/** The promoter to use when there are no more shortcuts. */
	private final Promoter			mNextPromoter;

	/**
	 * Creates a new ShortcutPromoter.
	 * 
	 * @param nextPromoter
	 *            The promoter to use when there are no more shortcuts. May be
	 *            {@code null}.
	 */
	public ShortcutPromoter(Promoter nextPromoter)
	{
		mNextPromoter = nextPromoter;
	}

	public void pickPromoted(SuggestionCursor shortcuts,
			ArrayList<CorpusResult> suggestions, int maxPromoted,
			ListSuggestionCursor promoted)
	{
		int shortcutCount = shortcuts == null ? 0 : shortcuts.getCount();
		int promotedShortcutCount = Math.min(shortcutCount, maxPromoted);
		if (DBG)
		{
			Log.d(TAG, "pickPromoted(shortcutCount = " + shortcutCount
					+ ", maxPromoted = " + maxPromoted + ")");
		}
		for (int i = 0; i < promotedShortcutCount; i++)
		{
			promoted.add(new SuggestionPosition(shortcuts, i));
		}
		if (promoted.getCount() < maxPromoted && mNextPromoter != null)
		{
			mNextPromoter
					.pickPromoted(null, suggestions, maxPromoted, promoted);
		}
	}
}
